Portable blackbody metering furnace based on semiconductor and mini-sized water cooling and heat radiation technology

Abstract

The invention discloses a portable blackbody metering furnace based on a semiconductor and a mini-sized water cooling and heat radiation technology. The furnace includes a blackbody cavity of which one end is provided with a uniform temperature block. The uniform temperature block is provided with a temperature sensor at the center position inside the uniform temperature block. Outside the blackbody cavity, a surface of the uniform temperature block is closely adhered to a semiconductor sheet. A surface of the semiconductor sheet is closed adhered to a heat radiation system. Inside the blackbody cavity, a surface of the uniform temperature block is subject to rough treatment and assumes a rough surface, and is also subject to blackening treatment. The blackbody cavity is provided with a nitrogen purging element therein. An external circumference of the blackbody cavity is wrapped with a heat-insulation layer. The furnace also includes a PCB temperature control circuit which is intended for regulating heating or cooling of the semiconductor sheet based on an output of a temperature control instrument. The furnace provides a comparatively stable calibration source for a medium and low temperature infrared thermometric indicator on an industrial site to conduct accurate calibration. The furnace is easy to carry out and fast in temperature increasing and decreasing rate, and can greatly increase calibration efficiency of a radiation thermometer.

Description

technical field [0001] The invention relates to a blackbody measurement furnace, in particular to a portable blackbody measurement furnace based on semiconductor technology, which is suitable for calibration and detection of infrared thermometers. Background technique [0002] Infrared thermometers are mainly used in real-time temperature monitoring, high-temperature abnormality alarm, monitoring, etc. in industrial process control systems, especially in auto parts manufacturing, power fire-fighting equipment failure alarms, and temperature monitoring of pharmaceutical and food manufacturing processes. . Therefore, local metrology institutes, factory metrology departments, and calibration and testing laboratories all need high-precision, high-efficiency blackbody metrology furnaces to calibrate and test infrared thermometers. [0003] The blackbody measurement furnace is the main equipment for calibrating and testing infrared thermometers. At present, the infrared radiatio...

AI Technical Summary

Problems solved by technology

At present, the infrared radiation temperature measurement technology has begun to develop from the traditional medium and high temperature temperature measurement field to the normal temperature or even low temperature application field, and the corresponding black body technology is also developing to the low temperature field. However, domestic companies, universities and research institutions The developed blackbody furnace either uses a constant temperature medium or a spherical cavity in structure, which results in a bulky and heavy blackbody furnace, which is difficult to transport to the site and cannot meet the calibration requirements of an online infrared thermometer; another On the one hand, the imported precision black body furnace with small size and light weight is easily disturbed by the harsh environmental conditions of the industrial site, and the heating and cooling time is not fast enough

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